New here gentlemen, fixed alot of issues because of this site over the past.
1994 350 sbc, with a lunati rv equivalent flat tappet cam. Tbi equipped. Auto tranny, 1993 pcm. [Non self aligning rockers without guideplates, I know this was/is sacrilege, swapping back to stamped steels, until I provision properly]
So I was pretty sure I wiped my camshaft because of user error [me]. Overly excessive cranking before break in. And developed a tap above around 1200 rpm and climbs. This is after 20 minutes of otherwise smooth break in, I figured it would've been likely.
Calculated risk. And I thought I'd struck out and didn't pursue further investigation. Save, for more damage otherwise.
However.
Upon removal of all 16 tappets, I found no unusual wear and all seemed to have survived the break in. But had pretty crudy looking oil compared anywhere else in whole motor I've seen, that may have caused the hyd lifters to stick. Seems relegated to a single cylinder I think in my case.
I've yet to pull the cam to inspect for damage, ie. Flat spot or other surprises.
So I ask
Is the camshaft worth investigating if the tappets survived?
Are the nsa rockers responsible for altering valvetrain geometry to produce the tap even if the rockers didnt walk off the Valvestems, or bend the pushrods?
Or did engine gunk clog and collapse a lifter?
What should I look for?
It's a doozy, and ask away if need I fill in the blanks.
1994 350 sbc, with a lunati rv equivalent flat tappet cam. Tbi equipped. Auto tranny, 1993 pcm. [Non self aligning rockers without guideplates, I know this was/is sacrilege, swapping back to stamped steels, until I provision properly]
So I was pretty sure I wiped my camshaft because of user error [me]. Overly excessive cranking before break in. And developed a tap above around 1200 rpm and climbs. This is after 20 minutes of otherwise smooth break in, I figured it would've been likely.
Calculated risk. And I thought I'd struck out and didn't pursue further investigation. Save, for more damage otherwise.
However.
Upon removal of all 16 tappets, I found no unusual wear and all seemed to have survived the break in. But had pretty crudy looking oil compared anywhere else in whole motor I've seen, that may have caused the hyd lifters to stick. Seems relegated to a single cylinder I think in my case.
I've yet to pull the cam to inspect for damage, ie. Flat spot or other surprises.
So I ask
Is the camshaft worth investigating if the tappets survived?
Are the nsa rockers responsible for altering valvetrain geometry to produce the tap even if the rockers didnt walk off the Valvestems, or bend the pushrods?
Or did engine gunk clog and collapse a lifter?
What should I look for?
It's a doozy, and ask away if need I fill in the blanks.